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WAN port flapping on TZ270 connecting to Cable Modem



  • Issue still persists 2+ months later with latest 7.1.1 code on TZ270s. 3 more sites with similar issues this month alone, again with Bell Hub 2000 router/modems (Canada). Fixing X1 to 1G/FD made no difference, but adding a dumb little gig switch between them seems to help, another spof.


  • I'm back!!

    Now I suspect it may be code, either on the SonicWall side or the ISP modem/router side. I now have an NSa2700 which just experienced the same symptom. I put a little 5 port HP Gig switch between the X1 interface and the ISP, the problem goes away.

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